本文選題：核殼結(jié)構(gòu) + 染料敏化太陽能電池　； 參考：《硅酸鹽學(xué)報》2014年07期

【摘要】：采用直流反應(yīng)磁控濺射工藝,在ZnO納米陣列的表面實現(xiàn)TiO2包覆,作為染料敏化太陽能電池光陽極,研究TiO2--ZnO核殼結(jié)構(gòu)的形成機(jī)理和制備工藝對其光電性能的影響。利用X射線衍射儀、掃描電子顯微鏡、能譜分析儀表征光陽極材料的成分與結(jié)構(gòu)。測試電池組件的伏安特性曲線、電壓-時間曲線和電化學(xué)阻抗譜,分析TiO2包覆對電子傳輸性能和光電轉(zhuǎn)換效率的影響機(jī)理。結(jié)果表明:磁控濺射制備的TiO2顆粒完整地包覆ZnO納米陣列,使得納米棒表面形貌由六棱柱向圓柱狀轉(zhuǎn)變,間隙變窄,直徑較ZnO納米陣列有所增加,陣列有序度得到改善。隨著延長染料吸附時間和TiO2包覆,光陽極界面電子傳輸阻抗顯著增加,光生電子的壽命也得到提高。經(jīng)過包覆的光陽極能夠作為阻擋層鈍化表面缺陷,抑制復(fù)合的發(fā)生,從而提高開路電壓和填充因子。經(jīng)過包覆的光陽極其光電轉(zhuǎn)換效率相對于純ZnO納米陣列提高了132%。
[Abstract]:Using the DC reactive magnetron sputtering technology, the TiO2 coating was realized on the surface of the ZnO nanoscale array. As the photoanode of the dye sensitized solar cell, the formation mechanism of the TiO2--ZnO nuclear shell structure and the effect of the preparation process on its photoelectric properties were studied. The components of the photoanode materials were analyzed by the X ray diffractometer and the scanning electron microscopy. And structure. Test the volt ampere characteristic curve, voltage time curve and electrochemical impedance spectrum of the battery assembly, analyze the influence mechanism of the TiO2 coating on the electronic transmission performance and the photoelectric conversion efficiency. The results show that the TiO2 particles prepared by magnetron sputtering are completely coated with ZnO nanoscale arrays, which make the surface morphology of the nanorods change from six prism to cylindrical shape. With the gap narrowing, the diameter of the array is increased and the array order is improved. With the prolongation of the adsorption time and the TiO2 coating, the electronic transmission impedance of the photoanode interface increases significantly, and the lifetime of the photoelectron is improved. The coated photoanode can be used as a passivation surface defect in the barrier layer, thus inhibiting the formation of the composite. By increasing the open circuit voltage and fill factor, the photoelectric conversion efficiency of the coated photoanode is increased by 132%. compared to that of the pure ZnO nano array.
【作者單位】： 蘭州理工大學(xué)材料學(xué)院 省部共建有色金屬先進(jìn)加工與再利用國家重點實驗室;
【分類號】：TM914.4

【參考文獻(xiàn)】

相關(guān)期刊論文 前6條

1 丁雨田;張楊;王t，

本文編號：1953403